This is the 2023rd most frequent Portuguese word.
chaves
Keys.
Here, 'chaves' refers to physical keys used to unlock a door.
Eu preciso das chaves para abrir a porta.
I need the keys to open the door.
In this usage, 'chaves' metaphorically means essential elements or solutions.
As chaves do sucesso incluem trabalho duro e perseverança.
The keys to success include hard work and perseverance.
Here, 'chaves' refers to the tuning pegs on a guitar used to adjust string tension.